Patent US4394056A successfully refreshed from Google Patents.
US4394056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawer locking mechanism
Assignee: Teradyne Inc
•
Filing: 1981-02-11
•
Granted: 1983-07-19
•
Expires: 2001-02-11
Abstract
Abstract A mechanism preventing opening more than one drawer at one time, the mechanism having one movable locking bar for each drawer, using gravity to move a bar into interfering, locking position when its associated drawer is opened, and using an inclined surface to raise the bar into non-locking position as the drawer is shut.
Inventors
- 👤 Elden W. Janke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:33
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/46; E05B65/462; E05B65/463
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
Locking mechanism for a plurality of vertically oriented horizontally reciprocal members which comprises a first member of said members, a second member of said members, a first vertically limitedly reciprocable locking bar, a second vertically limitedly reciprocable locking bar, first camming means carried by said first member for cooperation with said first vertically limitedly reciprocable locking bar to provide first vertical movement of said first vertically limitedly reciprocable locking bar when said first member is moved away from said first vertically reciprocable locking bar, second camming means carried by said second member for cooperation with said second vertically limitedly reciprocable locking bar to provide second vertical movement of said second vertically limitedly reciprocable locking bar when said second member is moved away from said second vertically reciprocable locking bar, first latch means carried by said first member for cooperation with said first vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said first vertical movement, and second latch means carried by said second member for cooperation with said second vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said second vertical movement.
Claim 2
Dependent Claim
192 words
Locking mechanism for a plurality of vertically oriented horizontally reciprocal members which comprises a first member of said members, a second member of said members, a first vertically limitedly reciprocable locking bar, a second vertically limitedly reciprocable locking bar, first camming means carried by said first member for cooperation with said first vertically limitedly reciprocable locking bar to provide first vertical movement of said first vertically limitedly reciprocable locking bar when said first member is moved away from said first vertically reciprocable locking bar, second camming means carried by said second member for cooperation with said second vertically limitedly reciprocable locking bar to provide second vertical movement of said second vertically limitedly reciprocable locking bar when said second member is moved away from said second vertically reciprocable locking bar, first latch means carried by said first member for cooperation with said first vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said first vertical movement, and second latch means carried by said second member for cooperation with said second vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said second vertical movement.
Claim 3
Dependent Claim
18 words
The mechanism of claim 1 in which said first vertical movement and said second vertical movement are downward.
Claim 4
Dependent Claim
33 words
The locking mechanism of claim 1 in which said first camming means and said first latch means are integral, and in which said second camming means and said second latch means are integral.
Claim 5
Dependent Claim
19 words
The locking mechanism of claim 1 in which said camming means are ramps and said latch means are abutments.
Claim 6
Dependent Claim
22 words
The locking mechanism of claim 4 in which said camming means and said latch means cooperate with notches in said locking bars.
Claim 7
Dependent Claim
26 words
The locking mechanism of claim 4 which comprises a multiplicity of camming means, a corresponding multiplicity of latch means, and a corresponding multiplicity of locking bars.
Claim 8
Dependent Claim
220 words
Locking mechanism for a plurality of vertically oriented horizontally reciprocal members which comprises a first member of said members, a second member of said members, a first vertically limitedly reciprocable locking bar, a second vertically limitedly reciprocable locking bar, first camming means carried by one of said first member and said first locking bar for cooperation with said first vertically limitedly reciprocable locking bar to provide first vertical movement of said first vertically limitedly reciprocable locking bar when said first member is moved away from said first vertically reciprocable locking bar, second camming means carried by one of said second member and said second locking bar for cooperation with said second vertically limitedly reciprocable locking bar to provide second vertical movement of said second vertically limitedly reciprocable locking bar when said second member is moved away from said second vertically reciprocable locking bar, first latch means carried by one of said first member and said first locking bar for cooperation with said first vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said first vertical movement, and second latch means carried by one of said second member and said second locking bar for cooperation with said second vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said second vertical movement.
Claim 9
Dependent Claim
220 words
Locking mechanism for a plurality of vertically oriented horizontally reciprocal members which comprises a first member of said members, a second member of said members, a first vertically limitedly reciprocable locking bar, a second vertically limitedly reciprocable locking bar, first camming means carried by one of said first member and said first locking bar for cooperation with said first vertically limitedly reciprocable locking bar to provide first vertical movement of said first vertically limitedly reciprocable locking bar when said first member is moved away from said first vertically reciprocable locking bar, second camming means carried by one of said second member and said second locking bar for cooperation with said second vertically limitedly reciprocable locking bar to provide second vertical movement of said second vertically limitedly reciprocable locking bar when said second member is moved away from said second vertically reciprocable locking bar, first latch means carried by one of said first member and said first locking bar for cooperation with said first vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said first vertical movement, and second latch means carried by one of said second member and said second locking bar for cooperation with said second vertically limitedly reciprocable locking bar to prevent horizontal movement of said second member upon said second vertical movement.
References Cited (Backward Citations)
US950813A
Cited
US2719770A
Cited
US2829021A
Cited
US3259444A
Cited
US3323849A
Cited
US3404929A
Cited
US3622216A
Cited
US3767280A
Cited
FR2240643A5
Cited
US3874755A
Cited
US3883200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |